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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*/
package com.sun.opengl.impl;
import java.lang.reflect.*;
import javax.media.opengl.*;
public final class GLReflection {
public static final boolean isClassAvailable(String clazzName) {
try {
Class clazz = Class.forName(clazzName);
return null!=clazz;
} catch (Throwable e) { }
return false;
}
public static final Constructor getConstructor(String clazzName, Class[] cstrArgTypes) {
Class factoryClass = null;
Constructor factory = null;
try {
factoryClass = Class.forName(clazzName);
if (factoryClass == null) {
throw new GLUnsupportedException(clazzName + " not available");
}
try {
factory = factoryClass.getDeclaredConstructor( cstrArgTypes );
} catch(NoSuchMethodException nsme) {
throw new GLUnsupportedException("Constructor: '" + clazzName + "("+cstrArgTypes+")' not found");
}
return factory;
} catch (Throwable e) {
if (Debug.debug("GLReflection")) {
e.printStackTrace();
}
throw new GLUnsupportedException(e);
}
}
public static final Constructor getConstructor(String clazzName) {
return getConstructor(clazzName, new Class[0]);
}
public static final Object createInstance(String clazzName, Class[] cstrArgTypes, Object[] cstrArgs) {
Constructor factory = null;
try {
factory = getConstructor(clazzName, cstrArgTypes);
return factory.newInstance( cstrArgs ) ;
} catch (Exception e) {
throw new GLUnsupportedException(e);
}
}
public static final Object createInstance(String clazzName, Object[] cstrArgs) {
Class[] cstrArgTypes = new Class[cstrArgs.length];
for(int i=0; i<cstrArgs.length; i++) {
cstrArgTypes[i] = cstrArgs[i].getClass();
}
return createInstance(clazzName, cstrArgTypes, cstrArgs);
}
public static final Object createInstance(String clazzName) {
return createInstance(clazzName, new Class[0], null);
}
public static final boolean instanceOf(Object obj, String clazzName) {
return instanceOf(obj.getClass(), clazzName);
}
public static final boolean instanceOf(Class clazz, String clazzName) {
do {
if(clazz.getName().equals(clazzName)) {
return true;
}
clazz = clazz.getSuperclass();
} while (clazz!=null);
return false;
}
public static final boolean implementationOf(Object obj, String faceName) {
return implementationOf(obj.getClass(), faceName);
}
public static final boolean implementationOf(Class clazz, String faceName) {
do {
Class[] clazzes = clazz.getInterfaces();
for(int i=clazzes.length-1; i>=0; i--) {
Class face = clazzes[i];
if(face.getName().equals(faceName)) {
return true;
}
}
clazz = clazz.getSuperclass();
} while (clazz!=null);
return false;
}
public static boolean isAWTComponent(Object target) {
return instanceOf(target, "java.awt.Component");
}
public static boolean isAWTComponent(Class clazz) {
return instanceOf(clazz, "java.awt.Component");
}
}
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